Kuhlman Corporation

Clark J Hamkins

James D Richerson

Randall L Schlake

A winding apparatus for fabricating a multifilar low voltage winding for a toroidal transformer is disclosed. The apparatus uses a wire storage magazine 18 and a wire winding shuttle 20 which rotate about a semitoroidal winding mandrel 38 to wind a multifilar low voltage winding 48 on the winding mandrel having a greater radial depth of turns at the radially inward leg of the winding than at the radially outward leg of the winding. The multifilar winding can be wound with a group of conductors in a single pass over the winding mandrel, or wound one conductor at a time using multiple passes over the winding mandrel, or wound using multiple passes over the winding mandrel with some intermediate number of conductors being wound during each pass.

Apparatus for fabricating a low voltage winding for a toroidal

Apparatus for winding a continuous length of wire about a mandrel to create coils of wire uses a coil winding machine having a circular cage mounted to a frame and a circular winding magazine freely rotatably mounted to the frame within the cage to define an annular cavity between them. Initially a supply of wire is wound on the magazine, such as counterclockwise. The wire on the magazine continues to be connected as a continuous strand to a large, external spool of wire. A winding shuttle is driven along the annular cavity clockwise to remove wire from the magazine and wind it about a mandrel. Wire is removed from the magazine at double the rate at which it is wound about the mandrel. The excess wire initially expands within the cavity. The expansion is halted by the cage. Once all of the excess wire is restrained by the cage, the continued clockwise movement of the shuttle causes the excess wire to double back upon itself in a loop so the wire is rewound on the magazine in the clockwise direction. Once all the excess wire is wound back on the magazine, the magazine, previously substantially stationary, begins to rotate clockwise which causes wire from the external spool of wire to be wound onto the rotating magazine. This continues until the mandrel is fully wound with a coil segment. At this time sufficient wire has been wound onto the magazine to wind the next coil segment. The process repeats to wind subsequent coil segments in alternating rotary directions as the shuttle moves in alternating rotary directions.

Self-loading wire winding assembly and method

A winding apparatus and method for fabricating a multifilar low voltage winding for a toroidal transformer is disclosed. The method and apparatus use a wire storage magazine (18) and a wire winding shuttle (20) which rotate about a semitoroidal winding mandrel (38) to wind a multifilar low voltage winding (48) on the winding mandrel having a greater radial depth of turns at the radially inward leg of the winding than at the radially outward leg of the winding. The multifilar winding can be wound with a group of conductors in a single pass over the winding mandrel, or wound one conductor at a time using multiple passes over the winding mandrel, or wound using multiple passes over the winding mandrel with some intermediate number of conductors being wound during each pass.

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Jackson, MI, United States of America

Clark J Hamkins